Ingredients
1 tbsp. kosher salt
1 large red onion, thinly sliced lengthwise
1 tsp. whole black peppercorns
1 tsp. dried oregano
1 tsp. cumin seeds
3 cloves garlic, peeled and halved lengthwise
1 1⁄2 cups red wine vinegar
Instructions
In a bowl, toss salt and onion together; let sit until onion releases some of its liquid, about 15 minutes. Transfer to jar along with peppercorns, oregano, cumin, and garlic, and pour over vinegar; seal with lid. Refrigerate at least 4 hours before using.
